Improvement in combined lock and latch



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N4 PETERS. FHOTU-UTHOGRAPMER. WASHINGTON, D GV atea @sala `SAMUEL (l. WEDDINGTON, OF JONESBOROUGH, INDIANA.

Letters Patent No. 107,207, dated September 6, 1870.

IMPROVEMENT IN COMBINED LOCK AND LATCH.

The Schedule referred to in these Letters Patent and making part of the name.

lfo all lwhom it may concern.- v

Be it .known that I, SAMUEL G. WEDDINGTOX, of Jouesborough, in the count-y of Grant and State ot Indiana, have invented certain Il nprovements in 'a Combined Lock and Latch, which I hereby declare to be fully, clearly, and' exactly described in the following specification,reference heilig had to the annexed drawing making part thereof, and in which- Figure 1 is an elevation of my improved' lock and latch, with the rear plate removed to show the interior mechanism. v A

. Figures 2 and 3 arc similar views, showing the bolt in different positions, and some'modilications in the construction of the operating parts.

Figure 4 is a section on line a: :v of iig. 1.

Figures 5 and 6 are views ofthe tumblers, through which the dogs are operated.

The same letters are used in all the figures in thc designation of identical parts.

This invention relates to adoor-lock of that class which is capable of serving not only as a com mou latch, but also as a lock, by having the bolt caught after it has been projected, so that it cannot be retracted into the case without the intel-position of a key, or other similar device for releasing it from the action of the catches.

My improvements consist in the combination and arrangement of several parts of the lock and latch, hereinafter to be more fully described.

In the annexed drawing,-

A represent-s the case, in which the diti'erent parts of the device are inclosed.

The locking-bolt B is to have vsubstantially the form shown in the drawing, and is arranged in the case to slide in and out .through an aperture in one of its ends.

The bolt is operated by means of a pinion, C', on

the knob-spindle O, meshing into a rack formed upon the under edge of the holt or, in stead ot' by the rack and pinion, the bolt may be moved by a rod or link, connectingit to a short arm ou such spindle, as shown in tig. 2.

D represent-s a spring, attached at oueend to a support, D, and at the other to the inner end of the locking-bolt, which latter is by the action 0f such spring projected through the end of the case.` iVhen this spring is arranged as shown in the present instance in iigs. 1 and 2, a suitable recess is formed in the t'ace ofthe locking-bolt for its accommodation.

For the purpose ot' regulating the tension of this spring, its support Dl is made movable, by providing a hole through it,'with a female-screw thread, and placing it upon a screw, D2.

The head of the latter bears against the outer surface of the case, so that, by turning itin one direction or the other, t-hepositiou of the support will be changed, and thereby the coils of the spring compressed or dilated, as the case may be.

In fig. 3 I have illustrated a different form of spring, which may bev employed in cheap locks of this kind, dispensing with the tension-regulating devices.

The screw E, or a catch, such aslshown in iig. 3, isy used to determine the range of motion ot' the lockingbolt, when the device is employed as a latch, by screwing it so tar into the case that its shank enters arecess in the lower edge of such bolt, and stops its outward movement before the dogs F, soon to be dey' scribed, can fall into the recess in the upper edge.V

F F are a seriesot''dogs pivoted at one end, one over the other, upon a common pin, j, from which point they extend forward in the direction of thelocking-bolt, upon the upper edge of which their other ends are supported.

Their length is such that when the device isar ranged to act as a latch their loose ends will 4project beyond the shoulder formed by the recess b in the up-, per Iedge of the bolt, when thrown ont as far as the screw E will permit, so that they cannot interfere with the movements of said bolt; but on withdrawing the screw E or catch, said bolt will be projected so far by the action of the spring as to carry itsshoulder beyond the points or ends of the dogs, which at once fall into the recess behind it, and prevent the retrac tion of the holt until they are again'raised above the shoulder thereon.

To guard against picking, a short projection, b', is formed on the shoulder of vthe bolt, under which the ends ot' the dogs enter, so that they can be raised only when such bolt is in its outermost position.

The dogs are raised by an equal unniber of tumblers, G, which are arranged to turn loosely upon, and are operated by, a spindle, G', which passes through the plates ofthe case, and maybe provided on its ends with knobs, by which to turn it.

Each tumbler has a projection or nose, y, on its periphery, which is to be turned underthe dog opposite.

means, and so on through the series, it' more than three are used.

Tile tumblcrs are arranged with reference to a dial upon the outer surface ot' the face-plate, around the spindle G', hy the assistance of which, and a pointer on such spindle, each may be set to 'bring its 'nose g under 'the dog opposite `to it. The combination of these tumblers is different in each lock. Each dog is connected by a spring, H', to a pivoted bar, H, there being as man y bars as there are dogs and v in contact with the noses on the tumblers, and turn them from under the dogs, to leave the latter free to again full into the recess 7) of the bolt whenever de- Sired.

K is a projecting pin secured upon the face of the bolt, which, when used, extends through a holein the spindle G', and prevents its turning, except when the bolt is in its outermost position.

W'hatI claim as my invention, and desire to secure by Letters Patent, is-

l. The combination of the tumblers G, dogs F, springs H', and bars H, all arranged substantially as set forth.

2. The projecting finger I, ou the looking-bolt B, arranged tooperate substantially as and for the purpose set forth. 4 j

' 3. The combination and arrangement of the spring Dits support D1, and screw D, substantially as and for the purpose set fort-h.

In 'testimony whereof I have signed my name vto this specification in the presence of two subscribing Witnesses.

Witnesses: SAMUEL O. WEDDINGTON.

J. W. SHIDELEB, IRA GAQE. 

